DARPA gave researchers $1.3 million to build a prototype engine that is fueled by light.
Unless you like radiation blasts to the face.
This is how humans might finally reach another star system.
Four decades ago, Voyager 1 and 2 began their journey to the stars. When will humans follow them?
Interstellar travel is evolving into a legitimate engineering challenge, rather than an idealistic pipe dream.
Experience everyone’s new favorite solar system in VR.
Remember when everyone thought that Earth was the only planet in the universe?